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问题 单项选择题

( ) 是连接普通家庭用户终端设备和信息高速公路之间的桥梁。

A．B-ISDN

B．ISDN

C．RBB

D．VOD

答案

参考答案：C

解析： 社区宽带网络(RBB) 是接到用户的高速网络，是连接普通家庭用户终端设备和信息高速公路之间的桥梁。

单项选择题

Most computer systems are (165) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (166) to an outsider attack by preventing (167) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (168) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (169) by tools referred to as Intrusion Detection Systems.

（168）处是（）

A.power

B.rights

C.authorized

D.common
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单项选择题

（　）是会计职业道德的基础，是社会主义职业道德所倡导的首要规范。

A．爱岗敬业　

B．诚实守信

C．办事公道　

D．服务群众
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